CN114704216B - Coiled tubing operating system - Google Patents
Coiled tubing operating system Download PDFInfo
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- CN114704216B CN114704216B CN202210631149.4A CN202210631149A CN114704216B CN 114704216 B CN114704216 B CN 114704216B CN 202210631149 A CN202210631149 A CN 202210631149A CN 114704216 B CN114704216 B CN 114704216B
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- Prior art keywords
- coiled tubing
- unit
- sealing
- shearing
- seal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
Abstract
The invention relates to the technical field of coiled tubing operation, in particular to a coiled tubing operation system. The system comprises a pipe reversing operation device and an operation vehicle; the pipe-reversing operation device comprises a base, a bracket, a power device, a roller, a pipe-arranging unit and a high-pressure manifold; the support is arranged on the base, the power device and the roller are arranged on the support, and the roller is used for winding the continuous oil pipe; the calandria unit is arranged on the base; the high-pressure manifold is arranged on the base; the operation vehicle comprises a chassis truck, a derrick, a gooseneck bracket and an injection head; the chassis vehicle is used for installing the pipe-reversing operation device, one end of the derrick is arranged on the chassis vehicle, and the other end of the derrick is provided with a gooseneck bracket and an injection head; the coiled tubing wound on the drum enters a mine through the pipe discharging unit, the gooseneck bracket and the injection head. The embodiment of the invention provides a coiled tubing operation system which can transport coiled tubing and perform coiled tubing operation.
Description
Technical Field
The invention relates to the technical field of coiled tubing operation, in particular to a coiled tubing operation system.
Background
The coiled tubing is a tubing made of low carbon alloy steel and has good flexibility, and is also called as flexible tubing, and a roll of coiled tubing is several kilometers long. The coiled tubing operation equipment has the characteristics of operation under pressure and continuous lifting, and has small volume, quick operation period and low cost. When transporting coiled tubing, need twine coiled tubing on the transportation cylinder, when coiled tubing operation, need use work cylinder cooperation operation car to transfer coiled tubing, simultaneously, let in high-pressure liquid coiled tubing and pour into in the pit.
In the related art, when coiled tubing work is performed, coiled tubing needs to be transferred from the transportation drum to the working drum, which increases the work preparation time and increases the work cost.
Therefore, in view of the above disadvantages, a coiled tubing operation system is urgently needed.
Disclosure of Invention
The embodiment of the invention provides a coiled tubing operation system which can transport coiled tubing and can perform coiled tubing operation.
The embodiment of the invention provides a coiled tubing operation system, which comprises a tubing inverting operation device and an operation vehicle;
the pipe-reversing operation device comprises a base, a bracket, a power device, a roller, a pipe-arranging unit and a high-pressure manifold;
the bracket is mounted on the base, the power device and the roller are mounted on the bracket and used for driving the roller to rotate, and the roller is used for winding a coiled tubing;
the pipe discharging unit is arranged on the base and used for guiding the coiled tubing during pipe discharging operation;
the high-pressure manifold is arranged on the base and is used for introducing high-pressure fluid into the coiled tubing;
the operation vehicle comprises a chassis vehicle, a derrick, a gooseneck bracket and an injection head;
the chassis truck is used for mounting the pipe-reversing operation device, one end of the derrick is arranged on the chassis truck, and the other end of the derrick is provided with the gooseneck bracket and the injection head;
and the coiled tubing wound on the roller enters a mine through the pipe discharging unit, the gooseneck bracket and the injection head.
In one possible design, the support comprises a movable support and a fixed support, the movable support can slide along the base, and the movable support and the fixed support are rotatably connected with two ends of the roller;
the base is provided with a first oil cylinder, and the first oil cylinder is used for adjusting the position of the movable support on the base.
In one possible design, the power device comprises a driving motor, a driving wheel, a driven chain wheel, a transmission shaft and a drive plate, wherein the transmission shaft is rotatably connected with the bracket;
the driving motor is connected with the driving wheel, the driving wheel is connected with the driven chain wheel through a chain, one end of the transmission shaft is connected with the driven chain wheel, the other end of the transmission shaft is connected with the driving plate, and the roller is arranged on the driving plate;
the driving motor drives the roller on the driving plate to rotate through the driving wheel, the driven chain wheel and the transmission shaft so as to wind the continuous oil pipe.
In a possible design, the transmission shaft connected with the fixed support is of a hollow structure, one end, far away from the movable support, of the transmission shaft with the hollow structure is communicated with the high-pressure manifold, and the other end of the transmission shaft with the hollow structure is communicated with the continuous oil pipe.
In one possible design, the calandria unit comprises two first calandria arms, two second calandria arms, a calandria device and a second cylinder;
one end of the first calandria arm is connected with the base through a pin shaft, the other end of the first calandria arm is connected with one end of the second calandria arm through a pin shaft, and the second oil cylinder is used for controlling the first calandria arm and the second calandria arm to lift;
the calandria device is including rotatory lead screw and calandria ware, the both ends of rotatory lead screw are installed respectively in two the second calandria arm is kept away from the one end of first calandria arm, with the transmission shaft is parallel, the calandria ware can be followed rotatory lead screw slides.
In one possible design, the system further includes a coiled tubing blowout preventer through which coiled tubing passing through the injector head enters the mine through the coiled tubing blowout preventer disposed at the mine port;
the coiled tubing blowout preventer comprises a shell, a sealing clamping unit, a sealing shearing unit, a sensor unit and a main control unit;
the shell is arranged at a mine port;
the sealing clamping unit is arranged in the shell and used for clamping the coiled tubing in a mine and sealing the outer wall of the coiled tubing with a mine opening;
the sealing shearing unit is arranged in the shell and used for shearing the continuous oil pipe and sealing the mine opening;
the sensor unit is used for acquiring pressure data and displacement data and transmitting the pressure data and the displacement data to the main control unit, wherein the pressure data is the pressure in a mine, and the displacement data comprises the displacement length and the displacement speed of the coiled tubing in the mine;
the main control unit is used for calculating a preset clamping force according to the pressure data and the displacement data and controlling the sealing clamping unit to output the preset clamping force to clamp the coiled tubing, and the main control unit is also used for controlling the sealing shearing unit to shear the coiled tubing.
In one possible design, the sealing and clamping unit comprises a first sealing and clamping unit and a second sealing and clamping unit, the first sealing and clamping unit and the second sealing and clamping unit are both provided with slip teeth and a first sealing assembly, the slip teeth are used for clamping the coiled tubing, and the first sealing assembly is used for sealing the outer wall of the coiled tubing and a gap between the sealing and clamping units so as to keep the sealing between the outer wall of the coiled tubing and the mine opening.
In one possible design, the seal shearing unit includes a first seal shearing unit and a second seal shearing unit, each of the first seal shearing unit and the second seal shearing unit includes a shearing portion for shearing the coiled tubing and a second seal assembly for maintaining a seal between the coiled tubing and the shearing portion during shearing of the coiled tubing by the shearing portion.
In one possible design, the coiled tubing blowout preventer further comprises a hydraulic control unit;
the main control unit is used for outputting a clamping instruction and a shearing instruction to the hydraulic control unit;
the hydraulic control unit is used for driving the sealing clamping unit to output the preset clamping force according to the clamping instruction so as to clamp the coiled tubing, and is used for driving the sealing shearing unit to shear the coiled tubing according to the shearing instruction.
In one possible design, the sensor unit comprises a pressure sensor for acquiring the pressure data and a displacement sensor for acquiring the displacement data.
Compared with the prior art, the invention at least has the following beneficial effects:
in the embodiment of the invention, the power device in the pipe reversing operation device can drive the roller to rotate so as to wind the coiled tubing on the roller, and the pipe reversing operation device wound with the coiled tubing is transported to an operation site, and at the moment, the pipe reversing operation device has a transportation function; in an operation site, the pipe reversing operation device is installed on a chassis, the coiled tubing is discharged by the driving device matched with a pipe discharging unit, enters a mine through a gooseneck bracket and an injection head on a derrick, a high-pressure manifold is connected with the coiled tubing, and high-pressure fluid is injected into the mine through the coiled tubing by the high-pressure manifold, so that the pipe reversing operation device has a pipe discharging operation function. In conclusion, the pipe reversing operation device provided by the invention has the functions of transporting the coiled oil pipe and performing pipe arranging operation on site, so that the operation efficiency is improved, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a coiled tubing operation system provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pipe-dumping working device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a coiled tubing blowout preventer according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first sealing and clamping unit according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a second seal holding unit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first sealing and shearing unit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a second seal shearing unit according to an embodiment of the present invention.
In the figure:
1-pipe inverting operation device;
11-a base;
111-a first cylinder;
12-a scaffold;
121-moving the support;
122-a fixed support;
13-a power plant;
131-a drive motor;
132-driving wheel;
133-a driven sprocket;
134-a drive shaft;
135-a dial;
14-a roller;
15-a calandria unit;
151-first calandria arm;
152-second calandria arm;
153-a calandria device;
1531-rotating the lead screw;
1532-a tube racker;
154-a second cylinder;
16-a high pressure manifold;
2-operation vehicle;
21-chassis vehicle;
22-a derrick;
23-gooseneck boom;
24-an injection head;
3-coiled tubing blowout preventer;
31-a housing;
32-a sealing clamping unit;
321-a first seal holding unit;
322-a second seal clamping unit;
323-slip elements;
324-a first seal assembly;
325 — a first top seal assembly;
33-a sealed shearing unit;
331-a first seal shearing unit;
3311-a second seal assembly;
332-a second seal-shearing unit;
333-a shearing part;
334-second top seal assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
In the description of the embodiments of the present invention, unless explicitly specified or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless otherwise specified or indicated; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it should be understood that the terms "upper" and "lower" as used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
As shown in fig. 1-2, an embodiment of the present invention provides a coiled tubing operation system, which includes a pipe reversing operation device 1 and an operation vehicle 2;
the pipe-reversing operation device 1 comprises a base 11, a bracket 12, a power device 13, a roller 14, a pipe-arranging unit 15 and a high-pressure manifold 16;
the bracket 12 is arranged on the base 11, the power device 13 and the roller 14 are arranged on the bracket 12 and are used for driving the roller 14 to rotate, and the roller 14 is used for winding the coiled tubing;
the pipe arranging unit 15 is arranged on the base 11 and used for guiding the coiled tubing during pipe arranging operation;
the high-pressure manifold 16 is arranged on the base 11 and is used for introducing high-pressure fluid into the coiled tubing;
the work vehicle 2 comprises a chassis 21, a derrick 22, a gooseneck boom 23 and an injection head 24;
the chassis 21 is used for installing the pipe-reversing operation device 1, one end of the derrick 22 is arranged on the chassis 21, and the other end of the derrick 22 is provided with a gooseneck bracket 23 and an injection head 24;
coiled tubing wound on the drum 14 passes through the calandria unit 15, the gooseneck boom 23 and the injector head 24 into the mine.
In the embodiment of the invention, the power device 13 in the pipe reversing operation device 1 can drive the roller 14 to rotate so as to wind the coiled tubing on the roller 14, and the pipe reversing operation device 1 wound with the coiled tubing is transported to an operation site, and at the moment, the pipe reversing operation device 1 has a transportation function; in the operation site, the pipe-reversing operation device 1 is installed on a chassis 21, the coiled tubing is discharged by a driving device matched with a pipe-arranging unit 15, enters a mine through a gooseneck bracket 23 and an injection head 24 on a derrick 22, a high-pressure manifold 16 is connected with the coiled tubing, and high-pressure fluid is injected into the well through the coiled tubing by the high-pressure manifold 16, and at the moment, the pipe-reversing operation device 1 has a pipe-arranging operation function. In conclusion, the pipe reversing operation device 1 provided by the invention has the functions of transporting the coiled tubing and performing pipe arranging operation on site, so that the operation efficiency is improved, and the cost is reduced.
In some embodiments of the present invention, the support 12 includes a moving support 121 and a fixed support 122, the moving support 121 can slide along the base 11, and the moving support 121 and the fixed support 122 are rotatably connected to two ends of the roller 14;
the base 11 is provided with a first oil cylinder 111, and the first oil cylinder 111 is used for adjusting the position of the movable bracket 121 on the base 11.
In this embodiment, the bracket 12 includes a moving bracket 121 and a fixed bracket 122, the roller 14 is rotatably mounted between the moving bracket 121 and the fixed bracket 122, and the first oil cylinder 111 is used for adjusting the position of the moving bracket 121 on the base 11, so that the moving bracket 121 and the fixed bracket 122 can mount the rollers 14 with different sizes.
In some embodiments of the present invention, the power device 13 comprises a driving motor 131, a driving wheel 132, a driven sprocket 133, a transmission shaft 134 and a dial 135, wherein the transmission shaft 134 is rotatably connected with the bracket 12;
the driving motor 131 is connected with the driving wheel 132, the driving wheel 132 is connected with the driven chain wheel 133 through a chain, one end of the transmission shaft 134 is connected with the driven chain wheel 133, the other end is connected with the drive plate 135, and the roller 14 is arranged on the drive plate 135;
the drive motor 131 rotates the drum 14 on the dial 135 via the driver 132, the driven sprocket 133 and the drive shaft 134 to wind the coiled tubing.
In the present embodiment, the power provided by the driving motor 131 is transmitted to the dial 135 via the driver 132, the driven sprocket 133, and the transmission shaft 134 to rotate the drum 14 mounted on the dial 135.
In some embodiments of the present invention, the transmission shaft 134 connected to the fixed bracket 122 has a hollow structure, and one end of the transmission shaft 134 having the hollow structure, which is far away from the movable bracket 121, is communicated with the high pressure manifold 16, and the other end is communicated with the coiled tubing.
In this embodiment, the transmission shaft 134 of the fixing bracket 122 is a hollow structure, and the transmission shaft 134 is connected to the high pressure manifold 16 and the coiled tubing through a rotary joint, so that the transmission shaft 134 can drive the dial 135 to rotate and can input the high pressure fluid provided by the high pressure manifold 16 into the coiled tubing.
In some embodiments of the present invention, the racking unit 15 comprises two first racking arms 151, two second racking arms 152, a racking device 153, and a second cylinder 154;
one end of the first pipe discharging arm 151 is connected with the base 11 through a pin shaft, the other end of the first pipe discharging arm 151 is connected with one end of the second pipe discharging arm 152 through a pin shaft, and the second oil cylinder 154 is used for controlling the first pipe discharging arm 151 and the second pipe discharging arm 152 to lift;
In this embodiment, the second cylinder 154 provides power to extend or retract the first and second casing arms 151 and 152, so that the height of the casing 1532 of the second casing arm 152 can be adjusted by the second cylinder 154; the tube rack 1532 of the tube rack 153 is used for guiding the tube rack during tube arranging operation, and the coiled tubing can be arranged on the drum 14 by rotating the lead screw 1531.
As shown in fig. 3-7, in some embodiments of the invention, the system further includes a coiled tubing blowout preventer 3, coiled tubing passing through the injector head 24 into the well through the coiled tubing blowout preventer 3 disposed at the wellhead;
the coiled tubing blowout preventer 3 comprises a housing 31, a seal clamping unit 32, a seal shearing unit 33, a sensor unit and a main control unit;
the casing 31 is arranged at the mine port;
the sealing and clamping unit 32 is arranged in the shell 31 and used for clamping the coiled tubing in a mine and sealing the outer wall of the coiled tubing with a mine port;
the sealing and shearing unit 33 is arranged in the shell 31 and used for shearing the continuous oil pipe and sealing the mine hole;
the sensor unit is used for acquiring pressure data and displacement data and transmitting the pressure data and the displacement data to the main control unit, wherein the pressure data is the pressure in the mine, and the displacement data comprises the displacement length and the displacement speed of the continuous oil pipe in the mine;
the main control unit is used for calculating a preset clamping force according to the pressure data and the displacement data, controlling the sealing clamping unit 32 to output the preset clamping force to clamp the coiled tubing, and controlling the sealing shearing unit 33 to shear the coiled tubing.
In this embodiment, the casing 31 is disposed at a mine port, the sealing clamping unit 32 is disposed in the casing 31, the sealing clamping unit 32 is used for clamping a coiled tubing in a mine, and after the sealing clamping unit 32 clamps the coiled tubing, the sealing clamping unit 32 and the coiled tubing are sealed, so that the outer wall of the coiled tubing and the mine port can be sealed, and high-pressure gas in the mine is prevented from leaking between the outer wall of the coiled tubing and the sealing clamping unit 32. The seal shearing unit 33 is used for shearing the coiled tubing and is capable of sealing the mine opening after it has completed shearing. The sensor unit collects pressure data and displacement data, and transmits the pressure data and the displacement data to the main control unit, wherein the pressure data is the pressure in the mine, the displacement data comprises the displacement length and the displacement speed of the coiled tubing in the mine, the main control unit calculates a preset clamping force according to the received pressure data and the displacement data, and outputs the numerical value of the preset clamping force to the sealing clamping unit 32, so that the force applied to the coiled tubing by the sealing clamping unit 32 is the preset clamping force. The main control unit is also used for controlling the sealing shearing unit 33 to shear the coiled tubing.
It can be understood that a plurality of preset clamping forces can be calculated according to the use requirements and by combining the pressure data and the displacement data, for example, when the coiled tubing needs to be stably suspended in a mine, a first preset clamping force can be calculated according to the pressure data and the displacement data, so that the coiled tubing is stably suspended in the mine, and the deformation of the tubing due to the overlarge clamping force is avoided; for example, when the coiled tubing needs to be pulled down, a second preset clamping force can be calculated according to the pressure data, and under the action of the second clamping force, the coiled tubing can not only keep the sealing between the outer wall of the coiled tubing and the sealing suspension unit, but also allow the coiled tubing to be pulled down in a mine; for example, when the coiled tubing is detected to be accidentally dropped, a third preset clamping force can be calculated according to the displacement speed, the displacement length and the pressure data, specifically, when the coiled tubing is accidentally dropped, the sensor unit acquires that the displacement speed data is abnormal (for example, the displacement speed is abnormal and can be the maximum speed when the displacement speed exceeds the rising speed of the coiled tubing, and can also be a preset value), and the third preset clamping force is calculated according to the displacement speed so as to clamp the dropped coiled tubing and seal the space between the outer wall of the coiled tubing and the sealing suspension unit.
The specific method for calculating the plurality of preset clamping forces according to the use requirements by combining the pressure data and the displacement data is as follows:
for example, when the coiled tubing needs to be stably suspended in the mine, the first preset clamping force can be calculated according to the pressure data and the displacement length, so that the coiled tubing is stably suspended in the mine, and the tubing cannot be deformed due to the excessive clamping force, and the calculation formula is as follows:
F 1 =（ρπ（r 1 +r 2 ）(r 1 -r 2 )h 1 g）/μ+2Pπr 1 h 2
wherein, F 1 Is a first preset clamping force, rho is the density of the coiled tubing, r 1 Is the outer diameter of the coiled tubing, r 2 Is the inner diameter of the coiled tubing, h 1 Is the displacement length, g is the gravitational acceleration, μ is the sliding friction factor between the coiled tubing and the seal clamping unit 32, P is the pressure data, h 2 Is the length of sealing contact between the coiled tubing and the seal holding unit 32;
for example, when the coiled tubing needs to be pulled down, a second preset clamping force can be calculated according to the pressure data, the coiled tubing can keep the sealing between the outer wall of the coiled tubing and the sealing suspension unit under the action of the second clamping force, and the coiled tubing can be allowed to be pulled down in a mine, and the calculation formula is as follows:
F 2 =2Pπr 1 h 2
wherein, F 2 For a second predetermined clamping force, r 1 Is the outer diameter of the coiled tubing, P is pressure data, h 2 Is the length of sealing contact between the coiled tubing and the seal holding unit 32;
for example, when the coiled tubing is required to be accidentally dropped, a third preset clamping force can be calculated according to the displacement data, specifically, when the coiled tubing is accidentally dropped, the sensor unit acquires that the displacement speed data exceeds a preset speed (for example, the preset speed may be a maximum speed at which the displacement speed exceeds the coiled tubing, or may be a preset value set according to experience), and calculates the third preset clamping force according to the displacement speed, the displacement length, and the pressure data, so as to clamp the dropped coiled tubing and seal between the outer wall of the coiled tubing and the sealing suspension unit, where the calculation formula is as follows:
F 3 =（ρπ（r 1 +r 2 ）(r 1 -r 2 )h 1 g）/μ+2Pπr 1 h 2 +（v/t）ρπ（r 1 +r 2 ）(r 1 -r 2 )h 1 g
wherein, F 3 For a third predetermined clamping force, ρ is the density of the coiled tubing, r 1 Is the outer diameter of the coiled tubing, r 2 Is the inner diameter of the coiled tubing, h 1 Is the displacement length, g is the gravitational acceleration, μ is the sliding friction factor between the coiled tubing and the seal gripping unit 32, P is the pressure data, h 2 Is the length of sealing contact between the coiled tubing and the seal gripping unit 32, v is the displacement velocity and t is the displacement time.
It should be noted that the density of the coiled tubing, the outer diameter and the inner diameter of the coiled tubing, the sliding friction factor between the coiled tubing and the sealing and clamping unit 32, and the sealing contact length between the coiled tubing and the sealing and clamping unit 32 may be measured in advance, and the displacement time may be obtained by using the main control unit, or may be provided with a separate timing device.
It should be noted that the sensor unit collects real-time data and transmits the real-time data to the main control unit, the main control unit receives the data and calculates a preset clamping force and outputs the preset clamping force to the sealed suspension unit, and the sealed suspension unit clamps the coiled tubing with the preset clamping force.
In some embodiments of the present invention, the casing 31 is forged from high-quality low-alloy steel, has excellent mechanical properties, and has good ability to withstand high downhole pressures and hydrogen sulfide.
In some embodiments of the present invention, the seal holding unit 32 comprises a first seal holding unit 321 and a second seal holding unit 322, each of the first seal holding unit 321 and the second seal holding unit 322 is provided with a slip insert 323 and a first seal assembly 324, the slip insert 323 is used for holding the coiled tubing, and the first seal assembly 324 is used for sealing a gap between the outer wall of the coiled tubing and the seal holding unit 32 so as to maintain a seal between the outer wall of the coiled tubing and the wellhead.
In this embodiment, the sealing and clamping unit 32 includes a first sealing and clamping unit 321 and a second sealing and clamping unit 322, and the first sealing and clamping unit 321 and the second sealing and clamping unit 322 are used for clamping the coiled tubing therebetween and sealing between the coiled tubing and the mine hole. The first sealing and clamping unit 321 and the second sealing and clamping unit 322 are respectively provided with a slip insert 323 and a first sealing assembly 324, the slip insert 323 is used for increasing the friction force between the first sealing and clamping unit 321 and the second sealing and clamping unit 322 and the coiled tubing, the first sealing assembly 324 is used for sealing the gap between the outer wall of the coiled tubing and the sealing and clamping unit 32 so as to keep the sealing between the outer wall of the coiled tubing and the mine opening, and the first sealing assembly 324 can be made of rubber materials.
It should be noted that, the first top sealing assembly 325 is disposed at the upper end of each of the first sealing and clamping unit 321 and the second sealing and clamping unit 322, and is used for maintaining the sealing between the first sealing and clamping unit 321 and the second sealing and clamping unit 322 during the movement of the housing 31.
In some embodiments of the invention, seal shearing unit 33 comprises a first seal shearing unit 331 and a second seal shearing unit 332, each of first seal shearing unit 331 and second seal shearing unit 332 comprising a shear 333 and a second seal assembly 3311, shear 333 being for shearing coiled tubing, and second seal assembly 3311 being for maintaining a seal between coiled tubing and shear 333 during shearing of coiled tubing by shear 333.
In this embodiment, the sealed shearing unit 33 includes a first sealed shearing unit 331 and a second sealed shearing unit 332, the first sealed shearing unit 331 and the second sealed shearing unit 332 each include a shearing portion 333, the second sealed shearing unit 332 further includes a second sealing component 3311, wherein the shearing portion 333 may be a double V-shaped knife edge, the second sealing component 3311 is circumferentially disposed on a side surface of the double V-shaped knife edge of the first sealed shearing unit 331, so that during the shearing of the coiled tubing by the shearing portion 333, the coiled tubing and the shearing portion 333 maintain a sealing contact, the two shearing portions 333 are attached to each other after the shearing is completed, and the second sealing component 3311 seals the two shearing portions 333 which are attached to each other, thereby completely sealing the mine.
It should be noted that the upper ends of the first sealing and shearing unit 331 and the second sealing and shearing unit 332 are respectively provided with a second top sealing assembly 334 for keeping the first sealing and clamping unit 321 and the second sealing and clamping unit 322 sealed during the movement of the housing 31.
In some embodiments of the present invention, coiled tubing blowout preventer 3 further comprises a hydraulic control unit;
the main control unit is used for outputting a clamping instruction and a shearing instruction to the hydraulic control unit;
the hydraulic control unit is used for driving the sealing clamping unit 32 to output a preset clamping force to clamp the coiled tubing according to the clamping instruction, and driving the sealing shearing unit 33 to shear the coiled tubing according to the shearing instruction.
In the present embodiment, the main control unit drives the seal holding unit 32 and the seal shearing unit 33 through the hydraulic control unit, which can provide a stable and continuous driving force. The hydraulic control unit comprises a side door, a cylinder cover, an oil cylinder, a piston and a locking assembly, and drives and replaces the sealing clamping unit 32 and the sealing shearing unit 33 of the coiled tubing blowout preventer 3, so that the operation is facilitated. In addition, the hydraulic control unit is provided with a manual locking device, when the driving force provided by the hydraulic control unit needs to be kept for a long time, the sealing clamping unit 32 or the sealing shearing unit 33 can be locked at the closing position through the locking assembly, and then the pressure source in the hydraulic pipeline can be cancelled, so that the situation that the site is in a pressurized working state for a long time can be avoided, the site potential safety hazard is reduced, and the safety performance is improved.
In some embodiments of the invention, the sensor unit comprises a pressure sensor for collecting pressure data and a displacement sensor for collecting displacement data.
In this embodiment, the sensor unit includes a pressure sensor and a displacement sensor, the pressure sensor is used for collecting pressure data, and the displacement sensor is used for collecting displacement data. The sensor unit can be connected with the main control unit in a wired mode or in a wireless mode.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The coiled tubing operation system is characterized by comprising a tubing inverting operation device (1) and an operation vehicle (2);
the pipe-reversing operation device (1) comprises a base (11), a support (12), a power device (13), a roller (14), a pipe-arranging unit (15) and a high-pressure manifold (16);
the bracket (12) is mounted on the base (11), the power device (13) and the roller (14) are mounted on the bracket (12) and used for driving the roller (14) to rotate, and the roller (14) is used for winding a coiled tubing;
the pipe discharging unit (15) is arranged on the base (11) and used for guiding the coiled tubing during pipe discharging operation;
the high-pressure manifold (16) is arranged on the base (11) and is used for introducing high-pressure fluid into the coiled tubing;
the operation vehicle (2) comprises a chassis (21), a derrick (22), a gooseneck boom (23) and an injection head (24);
the chassis (21) is used for installing the pipe-rewinding operation device (1), one end of the derrick (22) is arranged on the chassis (21), and the gooseneck bracket (23) and the injection head (24) are arranged at the other end of the derrick (22);
the coiled tubing wound on the drum (14) enters a mine shaft through the pipe discharging unit (15), the gooseneck bracket (23) and the injection head (24);
the coiled tubing penetrating through the injection head (24) enters a mine through a coiled tubing blowout preventer (3) arranged at a mine port;
the coiled tubing blowout preventer (3) comprises a shell (31), a sealing and clamping unit (32), a sealing and shearing unit (33), a sensor unit and a main control unit;
the shell (31) is arranged at a mine port;
the sealing clamping unit (32) is arranged in the shell (31) and is used for clamping the coiled tubing in a mine and sealing the outer wall of the coiled tubing with a mine opening;
the sealing shearing unit (33) is arranged in the shell (31) and used for shearing the coiled tubing and sealing the mine opening;
the sensor unit is used for acquiring pressure data and displacement data and transmitting the pressure data and the displacement data to the main control unit, wherein the pressure data is the pressure in a mine, and the displacement data comprises the displacement length and the displacement speed of the coiled tubing in the mine;
the main control unit is used for calculating a preset clamping force according to the pressure data and the displacement data, controlling the sealing clamping unit (32) to output the preset clamping force to clamp the coiled tubing, and controlling the sealing shearing unit (33) to shear the coiled tubing;
the preset clamping force comprises a first preset clamping force, a second preset clamping force and a third preset clamping force;
the first preset clamping force is used for suspending the coiled tubing in a mine;
the second preset clamping force is used for lifting and lowering the coiled tubing under the condition of keeping the sealing between the coiled tubing outer wall and the sealing and clamping unit;
the third preset clamping force is used for clamping the fallen coiled tubing.
2. Coiled tubing work system according to claim 1, wherein the cradle (12) comprises a mobile cradle (121) and a fixed cradle (122), the mobile cradle (121) being slidable along the base (11), the mobile cradle (121) and the fixed cradle (122) being rotatably connected to both ends of the drum (14);
the base (11) is provided with a first oil cylinder (111), and the first oil cylinder (111) is used for adjusting the position of the movable support (121) on the base (11).
3. Coiled tubing work system according to claim 2, wherein the power means (13) comprises a drive motor (131), a drive wheel (132), a driven sprocket (133), a drive shaft (134) and a dial (135), wherein the drive shaft (134) is rotatably connected with the carrier (12);
the driving motor (131) is connected with the driving wheel (132), the driving wheel (132) is connected with the driven chain wheel (133) through a chain, one end of the transmission shaft (134) is connected with the driven chain wheel (133), the other end of the transmission shaft is connected with the driving plate (135), and the roller (14) is installed on the driving plate (135);
the driving motor (131) drives the roller (14) on the drive plate (135) to rotate through the driving wheel (132), the driven chain wheel (133) and the transmission shaft (134) so as to wind the coiled tubing.
4. Coiled tubing operation system according to claim 3, wherein the transmission shaft (134) connected to the fixed bracket (122) is hollow, and the transmission shaft (134) having a hollow structure communicates with the high pressure manifold (16) at one end remote from the movable bracket (121) and communicates with coiled tubing at the other end.
5. Coiled tubing work system according to claim 4, wherein the racking unit (15) comprises two first racking arms (151), two second racking arms (152), a racking device (153) and a second cylinder (154);
one end of the first pipe discharging arm (151) is connected with the base (11) through a pin shaft, the other end of the first pipe discharging arm (151) is connected with one end of the second pipe discharging arm (152) through a pin shaft, and the second oil cylinder (154) is used for controlling the first pipe discharging arm (151) and the second pipe discharging arm (152) to lift;
the tube arranging device (153) comprises a rotary lead screw (1531) and a tube arranging device (1532), two ends of the rotary lead screw (1531) are respectively arranged at one end of the second tube arranging arm (152) far away from the first tube arranging arm (151) and are parallel to the transmission shaft (134), and the tube arranging device (1532) can slide along the rotary lead screw (1531).
6. The coiled tubing work system according to claim 1, wherein the seal gripping unit (32) comprises a first seal gripping unit (321) and a second seal gripping unit (322), the first seal gripping unit (321) and the second seal gripping unit (322) are provided with slip teeth (323) and a first seal assembly (324), the slip teeth (323) are used for gripping the coiled tubing, and the first seal assembly (324) is used for sealing a gap between the outer wall of the coiled tubing and the seal gripping unit (32) so as to keep a seal between the outer wall of the coiled tubing and the mine opening.
7. The coiled tubing work system of claim 1, wherein the seal shearing unit (33) comprises a first seal shearing unit (331) and a second seal shearing unit (332), the first seal shearing unit (331) and the second seal shearing unit (332) each comprising a shear (333) and a second seal assembly (3311), the shear (333) being for shearing coiled tubing, the second seal assembly (3311) being for maintaining a seal between coiled tubing and the shear (333) during shearing of coiled tubing by the shear (333).
8. Coiled tubing work system according to claim 1, wherein the coiled tubing blowout preventer (3) further comprises a hydraulic control unit;
the main control unit is used for outputting a clamping instruction and a shearing instruction to the hydraulic control unit;
the hydraulic control unit is used for driving the sealing clamping unit (32) to output the preset clamping force to clamp the coiled tubing according to the clamping instruction, and driving the sealing shearing unit (33) to shear the coiled tubing according to the shearing instruction.
9. The coiled tubing work system of claim 1, wherein the sensor unit comprises a pressure sensor for collecting the pressure data and a displacement sensor for collecting the displacement data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210631149.4A CN114704216B (en) | 2022-06-06 | 2022-06-06 | Coiled tubing operating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210631149.4A CN114704216B (en) | 2022-06-06 | 2022-06-06 | Coiled tubing operating system |
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| Publication Number | Publication Date |
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| CN114704216A CN114704216A (en) | 2022-07-05 |
| CN114704216B true CN114704216B (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210631149.4A Active CN114704216B (en) | 2022-06-06 | 2022-06-06 | Coiled tubing operating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115370307B (en) * | 2022-10-27 | 2023-01-31 | 易初机械装备有限公司 | Coiled tubing operation device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074484A (en) * | 2014-07-18 | 2014-10-01 | 北京奥瑞安能源技术开发有限公司 | Coiled tubing operation equipment |
| CN204571886U (en) * | 2015-03-31 | 2015-08-19 | 山东科瑞石油装备有限公司 | Two car headframe type coiled tubing work vehicle |
| CN105507833A (en) * | 2016-01-22 | 2016-04-20 | 中国石油天然气集团公司 | Derrick lifting type coiled tubing operation device |
| CN106246130B (en) * | 2016-08-18 | 2019-04-09 | 中国石油天然气股份有限公司 | Continuous pipe preventer |
| CN108131112A (en) * | 2016-11-30 | 2018-06-08 | 中国石油天然气股份有限公司 | Preventer |
| CN106988692B (en) * | 2017-03-09 | 2020-06-02 | 北京交通大学 | Coiled tubing pipe-pouring device with foldable pipe-arranging arm |
| CN212535586U (en) * | 2020-07-08 | 2021-02-12 | 华信唐山石油装备有限公司 | Heavy-load coiled tubing rewinder |
| CN112780202A (en) * | 2021-02-08 | 2021-05-11 | 烟台杰瑞石油装备技术有限公司 | Coiled tubing pipe-pouring device |
| CN214886924U (en) * | 2021-02-08 | 2021-11-26 | 烟台杰瑞石油装备技术有限公司 | Coiled tubing pipe-pouring device |
| CN113006717B (en) * | 2021-03-02 | 2024-03-08 | 广州海洋地质调查局 | Marine underwater coiled tubing equipment and method |
| CN114370245A (en) * | 2021-11-30 | 2022-04-19 | 四川宏华石油设备有限公司 | Continuous pipe operation system and continuous pipe operation construction method |
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